It's usually a can of worms. IMO with aluminum heads, you should be able to go with the thinnest gasket and still run pump gas. As far as power output, it's really splittin hairs with any of the three. Now watch the mayhem ensue.
Thanks RustyRatRod -- I appreciate your input.
I worried this might be a matter of debate and experiment.
I hear a lot about the importance of proper quench, but not much about significantly lowering my compression from the 'danger zone' and worrying less about quench.
